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Modeling of Soil Sealing by Urban Sprawl in Wukro, Ethiopia Using Remote Sensing and GIS Techniques
Taza GIS-Days: the International conference of GIS Users, Fez, Morocco (2012)
  • Ahmed Harb Rabia, A.H. Rabia
Abstract

Soil sealing is the covering of the soil surface with materials like concrete and stone, as a result of new buildings, roads, parking places but also other public and private space. Soil sealing by urban sprawl continues to increase all over the world where the area of urbanized land is increasing even more rapidly than the population. The degree of sealing is associated to the land use type and the density of population. Techniques of Remote Sensing and Geographical Information System (GIS) have been used widely to measure urban sprawl and to analyze the spatial features and unique mechanism of urban sprawl. The aim of this research is to evaluate the soil sealing process in the last two decades in Wukro, northern Ethiopia to quantify the soil lose due to urban expansion. In order to detect the urban sprawl of Wukro town, four different dates (1984, 1994, 2001 and 2008) and deferent remote sensing sources (Landsat images; Aerial Photographs, Aster images and Quick bird images) have been used in a GIS environment. Results showed that urban growth illustrated logarithmic augmentation with R-square value equal 0.9955 during the last two decades. The data revealed also that, studying the urban growth directions, it has been noticed that the growth had taken different behaviors from year to year during the time period 1984-2008. This study showed that remote sensing and GIS techniques are efficient tools to quantify and study the growth direction of soil sealing and urban sprawl.

Keywords
  • Soil Sealing,
  • Urban Sprawl,
  • Modeling,
  • Remote Sensing,
  • GIS.
Publication Date
May, 2012
Citation Information
Rabia, A.H. 2012, “Modeling of Soil Sealing by Urban Sprawl in Wukro, Ethiopia Using Remote Sensing and GIS Techniques”, Taza GIS-Days: the International conference of GIS Users, Fez, Morocco, Sidi Mohamed Ben Abdellah University, May 23-24, pp. 484:488. Available at: http://works.bepress.com/ahmed_rabia/3